title: Atmospheric pressure plasma pretreatment of sugarcane bagasse: the influence of moisture in the ozonation process.
abstract: Sugarcane bagasse samples were pretreated with ozone via atmospheric O2 pressure plasma. A delignification efficiency of approximately 80 % was observed within 6 h of treatment. Some hemicelluloses were removed, and the cellulose was not affected by ozonolysis. The quantity of moisture in the bagasse had a large influence on delignification and saccharification after ozonation pretreatment of the bagasse, where 50 % moisture content was found to be best for delignification (65 % of the cellulose was converted into glucose). Optical absorption spectroscopy was applied to determine ozone concentrations in real time. The ozone consumption as a function of the delignification process revealed two main reaction phases, as the ozone molecules cleave the strong carbon-carbon bonds of aromatic rings more slowly than the weak carbon-carbon bonds of aliphatic chains.
authors.affiliation: Laboratório Nacional de Ciência e Tecnologia do Bioetanol-CTBE/CNPEM, Caixa Postal 6170, 13083-970, Campinas, São Paulo, Brazil.
authors.forename: J A
authors.initials: JA
authors.lastname: Souza-Corrêa
authors.forename: C
authors.initials: C
authors.lastname: Oliveira
authors.forename: L D
authors.initials: LD
authors.lastname: Wolf
authors.forename: V M
authors.initials: VM
authors.lastname: Nascimento
authors.forename: G J M
authors.initials: GJ
authors.lastname: Rocha
authors.forename: J
authors.initials: J
authors.lastname: Amorim
mesh_terms: D001274:Atmospheric Pressure; D018533:Biomass; D002482:Cellulose / Q000737:chemistry*; D006868:Hydrolysis; D007700:Kinetics; D008031:Lignin / Q000737:chemistry; D010126:Ozone / Q000737:chemistry*; D058626:Plasma Gases / Q000737:chemistry*; D031786:Saccharum / Q000737:chemistry*
chemical_list: D058626:Plasma Gases; D010126:Ozone; D002482:Cellulose; D008031:Lignin; C027433:bagasse